What is LCoS?Liquid crystal on silicon (LCOS or LCoS) is a "micro-projection"
or "micro-display" technology typically applied in some front projector and rear
projection televisions. It is a reflective technology similar to DLP, although,
it uses liquid crystals instead of individual mirrors. By way of comparison, LCD
projectors use transmissive LCD chips, allowing light to pass through the liquid
crystal. In LCoS, liquid crystals are applied directly to the surface of a silicon
chip coated with an aluminized layer, with some type of passive layer, which is
highly reflective.

LCOS or liquid crystal on silicon is one of the four technologies used in rear projection
televisions. LCoS ("Liquid Crystal on Silicon") projectors are a more recent variation
of LCD technology, as LCoS also uses three panels of red, blue and green. LCOS panels
can be used with any kind of short-arc projection lamps.

LCoS projectors are about the same size as LCD models because they are both "3-chip"
technologies. On the other hand, experts say that LCoS systems produce better and
more natural-looking image displays than their LCD or DLP counterparts. Another
advantage of LCoS is that most TVs use a three chip design; one chip is dedicated
to each color, red, green and blue. LCoS has a primary advantage over LCD, due to
the fact that the pixel driving circuitry is located on the edge of the chip, not
within the pixel structure, a much higher fill factor can be obtained. The LCoS
fill factor can be as much as 90% or greater, greatly increasing device efficienc
LCOS or Liquid Crystal on Silicon has been touted to be the better than Texas Instrument's
DLP (Digital Light Processing) and LCD (Liquid Crystal Display). LCoS technology
has the potential to enable the manufacture of big-screen (50" and larger) high-definition
televisions with very high picture quality at relatively low cost. LCoS (Light Crystal
over Silicon) is a micro display technology that is used in display systems.

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